The 40L Aquaroll is manufactured to the same high specification as the 29L version but with the added advantage of a facility to connect via the mains adaptor kit directly to a mains water supply. Even without the mains facility the extra capacity is a must in modern caravanning.. The kit comprises 7.5m of food quality hose and a screw-in ball valve which ensures no mains pressure inside the caravan to eliminate the danger of flooding. The side opening can also be used as a convenient filling point when in use as a conventional water carrier. High quality tyres on deep rims give excellent ground clearance. Filler tube also included.